Spitzer observations of large amplitude variables in the LMC and IC 1613

The 3.6 and 4.5 ìm characteristics of asymptotic giant branch variables in the LMC and IC 1613 are discussed. For C-rich Mira variables there is a very clear periodluminosity-colour relation, where the [3.6] . [4.5] colour is associated with the amount of circumstellar material and correlated with t...

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Published in:EPJ Web of Conferences
Main Authors: Whitelock Patricia A., Kasliwal Mansi, Boyer Martha
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Online Access:https://doi.org/10.1051/epjconf/201715201009
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author Whitelock Patricia A.
Kasliwal Mansi
Boyer Martha
author_facet Whitelock Patricia A.
Kasliwal Mansi
Boyer Martha
author_sort Whitelock Patricia A.
collection DOAJ
container_title EPJ Web of Conferences
description The 3.6 and 4.5 ìm characteristics of asymptotic giant branch variables in the LMC and IC 1613 are discussed. For C-rich Mira variables there is a very clear periodluminosity-colour relation, where the [3.6] . [4.5] colour is associated with the amount of circumstellar material and correlated with the pulsation amplitude. The [4.5] periodluminosity relation for dusty stars is approximately one mag brighter than for their naked counterparts with comparable periods.
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spelling doaj-art-30cc63d124b94f4eaa6979ad06fcff0a2025-08-19T21:09:48ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011520100910.1051/epjconf/201715201009epjconf_puls2017_01009Spitzer observations of large amplitude variables in the LMC and IC 1613Whitelock Patricia A.0Kasliwal Mansi1Boyer MarthaSouth African Astronomical Observatory & Astronomy Department, University of Cape TownDivision of Physics, Mathematics and Astronomy, CITThe 3.6 and 4.5 ìm characteristics of asymptotic giant branch variables in the LMC and IC 1613 are discussed. For C-rich Mira variables there is a very clear periodluminosity-colour relation, where the [3.6] . [4.5] colour is associated with the amount of circumstellar material and correlated with the pulsation amplitude. The [4.5] periodluminosity relation for dusty stars is approximately one mag brighter than for their naked counterparts with comparable periods.https://doi.org/10.1051/epjconf/201715201009
spellingShingle Whitelock Patricia A.
Kasliwal Mansi
Boyer Martha
Spitzer observations of large amplitude variables in the LMC and IC 1613
title Spitzer observations of large amplitude variables in the LMC and IC 1613
title_full Spitzer observations of large amplitude variables in the LMC and IC 1613
title_fullStr Spitzer observations of large amplitude variables in the LMC and IC 1613
title_full_unstemmed Spitzer observations of large amplitude variables in the LMC and IC 1613
title_short Spitzer observations of large amplitude variables in the LMC and IC 1613
title_sort spitzer observations of large amplitude variables in the lmc and ic 1613
url https://doi.org/10.1051/epjconf/201715201009
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